Gear-mounting.



P. DIEHL GEAR MOUNTING.

APPLICATION FILED OCT. 31. 1912.

1, 17 1 ,327 Patented Feb. 8, 1916.

2 SHEETS-SHEET I.

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WITNESSES: l/VVE/VIOR I P/zmpfim 36%;

A TTOR/VEY THE COLUMBIA FMNOGMPH $10., WASHINGTON D c WITNESSES: 6." M

P; DIEHL.

GEAR MOUNTING.

APPL ICATION FILED OCT. 31, 1912..

THE COLUMBIA PLANOGRAPH (30.. WASHINGTON. D. c.

Patented Feb. 8, 1916.

2 SHE ETS-SHEET 2.

A TTOR/VEY smrns .PiiiLIi D IEHL,

emanour m'maf 0F -ELIZABETH, NEW JERSEY, AssieN'oa-roirHEsINeER MANUFAc- TUBING COMPANY, A CORPORATIONDFINEW masnr, 1

Application fiiea octobrsl, 1912 Serial No. 7%;7791' Q To all whom/it may 501mm; 1

Be it-known that I, PHILIP DIE'HL', a citizen of the'United States, residing at Eliza beth, in the county of Union and State of New Jersey, have invented certain'new and useful Improvements in Gear-Mount1n s,of

, which the following is a specification, reference being had'thereinto.the' accompanyr' in'g drawings.

This inventlon relates to improvementsin -sewing machines, and has for its object to provide'imp'roved means forgiving to the loop-taker its rotary inovements.

As is well understood by those" familiar with sewing machine construction, the features important to the development of high speedlock-stitch sewing machines are the employment of a loop-taker having a plurality of rotationsto onecomplete actuation of the needle-carrying bar, and a flexible connection, such as a belt, for transmitting power from the main or needle-bar-driving shaftto the 1oop-taker It is conceded thatfor durability the employment of a beltconnection is undesirable, .and priorto the-present inventiongea'rsof various forms and arrangement have been substituted, but owingto their exposed condition and manner of application and the undersirable noise common to co-acting gears driven at high speedespecially whe'n 'operatively connecting the-main shaft with vthe loop -takerdriving shaft performs; a minim'umof labor, andthe gears are ar ranged and protected to avoid {LIIYQPGICGPtl ble noise 'due to their coaction'; further, the means employedforzeffectingfthe lubrication of the gears and the shaft bearings are: so

, devised as to insure that no foreign sub stance will enter the "lubricant; and-that the teeth=of the several gears will at all times 'be'fcushioned against'direct" contact; thus avoiding the liability of their becoming deingtheinvention, in the several figures, of WlljlCli hke parts are similarly' designated,

Figurel 'i's' a'. View in front side elevation of a sewing machine embodying the improved mechanismthe" bracket arin' and bedqolate Patented Febi S,1916.

being shown in se'c'tiqn and thefeed-lift fock-s'ha'ftbrokenlout to 'better illustrate the relative action of the parts. Fig? 2 is" an underside view of the machine" shown in Fig. l',-e:cept that the low r" oil'receptacle Vi'ous figures, except" that the bed-platejifs shown cr'osssection on a' 'line' correspond lng' substantiallyto the line of needle actua- -t1"on. Fig; 4:=1s'a detail View oflthe feeda'd-justing mechanism. is a View of the oppositely arrangedflhalves offthe' 'oil receptacle" or retainer inclosing" the gears connecting-the niain' or, needle-bar-actuating shaft with the? vertically arranged' gear s'haftg thro-ugh which latter mean-stran mitted to t'h'e'looper actuating'shaffi Fig. 6 is a detail view ofone' of the halves of the o lrecepta'cle inclosing the "gears connecting fis shown in 'sectioni 3fis a I front end- 'eilevatlonof the machine shown In thepre theve'rtically a ranged gear shaft withthe a ,looper-ac'tuating shaft.

Referring to the figures," 1 represents the bed-plate of the sewing fmachineupon which is mounted the bracket ar1n= comprising" the tubular arm 1 bracket '2 and hollow standard 3, 4 the main or needle-bar-actuating shaft carrying "at" one end the band -or 'hand wheel 5"and.- at its oppositeendthe shaft'flange'b 7 connected by alink 7 with-the needlebar 8 carryin the" eye -pointed needle 9, and- 10 .one 'form of commonly employed'take-upl j ll represents the spring-depressed cloth presser-carry'ing bar, 12 the'cloth-presser', 13 the front shde plate andl lthethroat" or needle plate;

which is provided with a groove, as 18, (one only of said straight sides being shown) and into said grooves are mounted the respective shoes 19 and 20 of the forked feed-eccentric connection 21 whose lower end is pivotally attached to an arm 22 secured by pinch screw 23 and pin 2.4 to the feed rock-shaft 25, the forward end of the latter being provided with a crank arm 26 pivotally connected to one end of a feed-dog-carrying bar 27 provided with a feed-clog 28, thus transmitting from the feed-eccentric 15 feed movements to said feed-dog.

29 represents a bell crank feed-adjusting lever pivoted by stud screw 30 to the bracket arm, and to the arm 31 of said lever is piv otally connected, by screw 32, one end of a link 33 whose opposite end is pivotally attached, by screw 34, to the feed-eccentric connection 21, the arm'35 of said lever being provided with a screw 36 the head of which is located outside of the bracket arm and employed .to shift said bell crank lever on the stud screw 30 to position the link 33 at an angle to the vertically arranged movements of the connection 21, to effect the clesired amplitude of feed movement as in earlier constructions 37 represents the feed-lift eccentric carried by the main shaft and encircled by the upper end of the feed-lift eccentric connection 38 whose lower end is pivotally connected, by screw 39, to an arm 40 carried by the feed-lift rock-shaft 41, the forward end of the rock-shaft carrying a-crank arm 42 provided with a slide block 43 which enters a forked opening 44 in the end of the feed-dog-carrying bar 27, thus transmitting vertically arranged movements from the eccentric 37 to the feed-clog 28.

45 represents a vertically arranged gear shaft which carries at its lower end a bevel gear 46 and at its opposite end a like gear 47, the latter meshing with a bevel gear 48 carried by the main shaft 4, and as said gear 48 and gear 47 are of theratio of two to one, the gear shaft 45 is given two rotations toone rotation of said main shaft, the gear 46 meshing with a like gear 49 carried by the looper-actuating shaft 50 provided with a loop-taker 51.

Important to the present construction is the providing of substantially oil-tight receptacles or retainers inclosing the upper and lower coacting gears for connecting the main shaft and looper-actuating shaft with the gear shaft.

- Referring to Figs. 1 and 5, 52 and 53 represent the two halves of the upper oil receptacle, and in Figs. 1 and 6, 54 and 55 represent the two halves of the lower oil receptacle, in each instance the two halves being identical except that the half 52' is provided with a suitable opening -(not shown) into which is threaded a screw 56, said opening comprising convenient means for replenishing the lubricant. The separate halves of the upper receptacle are secured together by a screw 56 passing through the opening 57 and. threaded into the opening 58, the separate halves of the lower receptacle being secured together in like manner by a screw passing through the opening 59 and threaded into the opening 60.

The surfaces, as 61, of the oil receptacles are milled or faced to insure that the joint formed by securing together the two halves will be substantially leakage proof, and to prevent the leakage of lubricant through the circular openings 62 formed by theunion of the separate halves and to firmly lock the receptacles against accidental movement; the walls 63 are forced by screws 56 into contact with the peripheral or securing surfaces of the stationary members 64, comprising in the present instance bushings into which are mounted to rotate the opposite ends ofthe shaft 45 and the rear ends of the shafts 4'and 50. In each instance the dividing lines of the receptacles substantially intersect the axes of the inclosed gears.

Inpractice, the receptacles are supplied with a semi-fluid lubricant, as grease or Vaseline, in sufficient quantity to insure that the gear teeth of one of the c0-acting gear members will eflect a distribution of the lubricant over the gear teeth of its coacting gear member, substantially as shown by dotted lines aa, Fig. 1, which in effect cushions the gear teeth, thus preventing the undesirable noise incident to the employment of gears operated at comparatively high speed and tending to lessen the liability of the gear members being damaged through the sudden stopping and starting of the machine, and as the gear teeth are protected from coming in contact with substances likely to interfere with their action, the

earlier objections incident to the use of gear connections for transmitting power from the needle-bar-actuating to the looper-actuating shaft are obviated to an extent that gives to the present construction substantial advantages over those employing belt connections for a like transmission of power.

Claim In a sewingmachine, a frame constructed with a bed-plate and a bracket-arm formed with a hollow standard'and a tubular arm extending therefrom and overhanging said bed-plate, transversely arranged bearing bossed' members carried by and fixedly secured to said frameand provided with inner shaft bearings and outer securing surfaces, shafts ournaled in said bearing bossedmembers, gear members .operatively connecting said shafts, gear casings inwhich said gear members are inclosed, said gear casings comname to this specification, in the presence vof prising separate halves provided with transtwo subscribing Witnesses. versely arranged Walls fixedly secured only PHILIP DIEHL.

upon said outer securing surfaces to effect Witnesses: 5 substantially air tight receptacles. F. W; OSBORN,

'In testimony whereof, I have signed my HENRY A. 'KORNEMANN, Jr.

Copiesof this patent may be obtained for five cents each, addressing the Commissioner of Patents;- Washington, D. C. I 

